RATIONALE: Drugs used in chemotherapy, such as cisplatin and gemcitabine hydrochloride, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Sorafenib tosylate may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth or by blocking blood flow to the tumor. Giving cisplatin and gemcitabine hydrochloride together with sorafenib tosylate may kill more tumor cells. Giving them before surgery may make the tumor smaller and reduce the amount of normal tissue that needs to be removed.